Fred Walton Parham, M.D.
Internal Medicine Physician · Vacaville, CA
Fred Walton Parham, M.D. is an internal medicine physician with a practice address in Vacaville, California, and NPI 1558330563, issued on Mar 14, 2006. Check the license (California G43938, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Fred Walton Parham
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G43938 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Nut Tree RD, Vacaville, CA 95687
- Phone
- (707) 447-3600
- Enumerated
- Mar 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 446-6515
- Medicaid ID
- 00G439383 CA
- Entity
- Type 1 · individual
Also registered at 1000 Nut Tree RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marissa Boyd, MSN, RN, FNPFamily Nurse Practitioner1750548608
- Adrienne Lee, OTR/LOccupational Therapist1043681059
- Alexia Lowi-TengPsychiatric/Mental Health Nurse Practitioner1124882675
- Gracie Polen, RNEmergency Registered Nurse1104744226
- Megan Rodriguez Canova, FNP-CFamily Nurse Practitioner1275965295
- Hy TonNutrition Support Pharmacist1023553062
Verify Fred Walton Parham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G43938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53 internal medicine physician records list a practice address in Vacaville
They are 53 of the 1,903 NPPES records with a practice address in Vacaville, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 53 in Vacaville → All 17,696 in California → Every provider in Vacaville →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Fred Walton Parham, M.D.'s NPI number?
Fred Walton Parham, M.D.'s National Provider Identifier (NPI) is 1558330563, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Fred Walton Parham, M.D. located?
The NPPES record lists a practice address at 1000 Nut Tree RD, Vacaville, CA, 95687. Phone: (707) 447-3600. Providers update this record themselves, so call before visiting.
How can I verify Fred Walton Parham, M.D.'s license?
NPPES lists California license number G43938, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.